Preliminary investigation into the application of coal petrography in the blending of anthracite and bituminous coals for the production of metallurgical coke

Technical Report · Mon May 01 04:00:00 EDT 1961

OSTI ID:5330714

Middleton, B D; Inouye, K; Spackman, W

Representative samples were riffled from the bituminous coal samples and carbonized under identical conditions in a seven pound electrically heated laboratory coke oven. Varying percentages (up to 25 percent) of the naturally occurring anthracite size fractions were blended with each of the bituminous coal samples and coked under similar conditions. The strength of the resultant coke was determined for the three bituminous coal cokes and for a total of 41 such blend-cokes. Two simple petrographic classifications based on (1) maceral-mineral composition and (2) their coal particle associations were established to characterize these compositional differences. Compositional patterns developed by use of this maceral-mineral classification showed a remarkable similarity with those of the chemical and size consist data. Data derived from coke strength tests show that significant increases in coke microstrength and stability can be achieved by blending anthracite with bituminous coal. The type of anthracite and the type of bituminous coal both influence the strength of the resultant coke hence proper selection of each is essential to achievement of optimum results. Microstrength increases in excess of 20 units and coke stability increases in excess of 25 units were obtained. In the case of certain of the blends the maximum stability was not reached even though 20 percent of anthracite was added.

• Research Organization: Pennsylvania State Univ., University Park (USA). Dept. of Geology
• OSTI ID: 5330714
• Report Number(s): SR-27
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401* -- Coal & Coal Products-- Carbonization-- (-1987)
010600 -- Coal
Lignite
& Peat-- Properties & Composition
ANTHRACITE
BITUMINOUS COAL
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
COAL
COKE
DECOMPOSITION
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGY
MECHANICAL PROPERTIES
MIXTURES
NORTH AMERICA
OPTICAL PROPERTIES
PENNSYLVANIA
PETROLOGY
PHYSICAL PROPERTIES
REFLECTIVITY
SURFACE PROPERTIES
USA